Main.java Source code

Introduction

Here is the source code for Main.java

Source

import java.awt.BorderLayout;
import java.awt.Graphics;
import java.awt.Image;
import java.awt.Toolkit;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;

import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JPanel;

public class Main extends JFrame implements ActionListener {
    Image img;

    JButton getPictureButton = new JButton("Get Picture");

    public static void main(String[] args) {
        new Main();
    }

    public Main() {
        this.setSize(300, 300);
        this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

        JPanel picPanel = new PicturePanel();
        this.add(picPanel, BorderLayout.CENTER);

        JPanel buttonPanel = new JPanel();
        getPictureButton.addActionListener(this);
        buttonPanel.add(getPictureButton);
        this.add(buttonPanel, BorderLayout.SOUTH);

        this.setVisible(true);
    }

    public void actionPerformed(ActionEvent e) {
        String file = "a.png";
        if (file != null) {
            Toolkit kit = Toolkit.getDefaultToolkit();
            img = kit.getImage(file);
            img = img.getScaledInstance(300, -1, Image.SCALE_SMOOTH);
            this.repaint();
        }
    }

    class PicturePanel extends JPanel {
        public void paint(Graphics g) {
            g.drawImage(img, 0, 0, this);
        }
    }

}